Table 1.
Observation epochs, total integration time on source, V-band seeing, and coherence time conditions as reported by the ESO Paranal differential image motion monitor (DIMM), and H-band Strehl ratios and aperture magnitudes obtained from the GRAVITY acquisition camera (50 mas FWHM aperture).
| Source | Obs. date | Int. time (min) | Seeing (″) | Coherence time (ms) | Strehl | H | K | V |
|---|---|---|---|---|---|---|---|---|
| PDS 456 | 2018-08-26 | 65 | 0.51−0.85 | 4.8−8.3 | 0.03−0.14 | 11.3 | 10.2 | 14.5 |
| 2018-08-27 | 40 | 0.40−0.50 | 4.0−6.2 | 0.18−0.23 | 11.7 | 10.7 | ||
| NGC 3783 | 2018-01-07 | 80 | 0.40−0.70 | 5.7−10.9 | 0.03−0.07 | 10.8 | 9.8 | 13.4 |
| 2018-01-08 | 80 | 0.47−0.73 | 5.8−10.5 | 0.01−0.03 | 10.8 | 9.8 | ||
| 2018-05-31 | 105 | 0.38−0.61 | 2.5−4.8 | 0.10−0.27 | 10.6 | 9.8 | ||
| 2019-02-16 | 186 | 0.5−0.9 | 6.0−13.8 | 0.09−0.22 | 11.0 | 10.2 | ||
| 2019-03-31 | 120 | 0.4−0.6 | 3.2−7.0 | 0.03−0.20 | ... | 10.2 | ||
| 3C 273 | 2017-07-07 | 40 | 0.44−0.77 | 4.6−6.5 | 0.06−0.11 | 10.9 | ... | 12.9 |
| 2018-01-08 | 40 | 0.44−0.59 | 6.9−9.0 | 0.03−0.13 | 10.9 | 10.0 | ||
| 2018-05-30 | 90 | 0.48−0.68 | 2.9−4.1 | 0.05−0.15 | 11.0 | 10.1 | ||
| Mrk 509 | 2017-08-04 | 60 | 0.31−0.56 | 5.5−8.5 | 0.10−0.16 | 11.7 | ... | 13.5 |
| 2017-08-05 | 55 | 0.46−0.71 | 6.5−8.5 | 0.09−0.16 | 11.6 | 10.9 | ||
| 2017-08-08 | 30 | 0.29−0.48 | 9.0−10.8 | 0.23−0.28 | 11.6 | 10.7 | ||
| 2018-08-26 | 20 | 0.61−0.80 | 7.5−8.1 | 0.08−0.13 | 11.4 | 10.7 | ||
| NGC 1365 | 2018-01-07 | 15 | 0.54−0.65 | 6.6−10.9 | 0.02−0.03 | 10.9 | 10.0 | |
| 2018-01-08 | 15 | 0.64−0.78 | 4.8−6.4 | 0.06−0.08 | 10.8 | ... | ||
| 3C 120 | 2018-11-20 | 20 | 0.35−0.56 | 4.1−5.7 | 0.05−0.13 | 11.4 | 11.6 | 15.1 |
| IRAS 09149-6206 | 2018-11-20 | 65 | 0.64−1.03 | 3.7−4.0 | 0.07−0.13 | 10.9 | 9.8 | 12.3 |
| 2019-02-16 | 96 | 0.5−1.2 | 5.7−9.2 | 0.04−0.14 | 10.5 | 9.7 | ||
| Mrk 335 | 2018-11-20 | 5 | 0.48 | 8.2 | 0.05 | 11.0 | 11.2 | 13.9 |
| 2019-07-15 | 50 | 0.5−0.9 | 1.8−-3.8 | 0.03−0.08 | 10.9 | 11.0 |
Notes. The H- and K-band magnitudes were flux calibrated using Simbad H magnitudes of calibrator sources, and are only reported when a calibrator was observed. The typical uncertainty is 0.2 (H) and 0.3 (K) mag. The K magnitudes measured for 3C 120 and Mrk 335 are likely much more uncertain because the Strehl ratios of these observations were very low. The V magnitudes are taken from Simbad.
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